/**
 *    Copyright 2009-2015 the original author or authors.
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.apache.ibatis.session;

/**
 * @author Clinton Begin
 */
/**
 * 分页用，记录限制
 *
 */
public class RowBounds {
	/**
	 * 默认开始的页码
	 */
	public static final int NO_ROW_OFFSET = 0;
	/**
	 * 每页最大的条数
	 */
	public static final int NO_ROW_LIMIT = Integer.MAX_VALUE;
	public static final RowBounds DEFAULT = new RowBounds();

	// offset,limit就等于一般分页的start,limit,
	/**
	 * 开始的页码
	 */
	private int offset;
	/**
	 * 每页的条数
	 */
	private int limit;

	/**
	 * 默认是一页Integer.MAX_VALUE条
	 */
	public RowBounds() {
		this.offset = NO_ROW_OFFSET;
		this.limit = NO_ROW_LIMIT;
	}

	public RowBounds(int offset, int limit) {
		this.offset = offset;
		this.limit = limit;
	}
	/**
	 * 得到开始的页码
	 * @return
	 */
	public int getOffset() {
		return offset;
	}
	/**
	 * 得到每页的条数
	 * @return
	 */
	public int getLimit() {
		return limit;
	}

}
